Ms. Wendy Hayes has served as our independent director since the IPO. Ms. Hayes has served as an independent director of Burning Rock Biotech Limited (NASDAQ: TC) since November 2018 and Xinyuan Real Estate Co., Ltd. (NYSE: XIN) since January 2020. Between May 2013 and September 2018, Ms. Hayes served as the inspections leader at the Public Company Accounting Oversight Board in the United States. Prior to that, Ms. Hayes was an audit partner at Deloitte (China). Ms. Hayes received her bachelor's degree in international finance from University of International Business and Economics in 1991, and her executive MBA from Cheung Kong Graduate School of Business in 2012. Ms. Hayes is a certified public accountant in the United States (California) and China.